Question 2 of 20 : Select the best answer for the question 2. The cat chain of an overhead chain conveyor should be changed on a PM schedule of every O A. year B. Six months OC. two years D. three months. suon 3. An electric motor with sealed bearings O A. should be greased with low-pressure-type grease B. should be disassembled and lubricated every six months O C. will require fresh oil every two years. O D. won't require lubrication Question 4 of 20 : Select the best answer for the question 4. When you're first starting a PM program, and you want to check motor starter and contactor contacts, how often should you perform a PM inspection on these devices? O A. Every month O B. Every year OC. Every two months O D. Every six months Question 5 of 20 : Select the best answer for the question 5. When you're dealing with a PM task for a drive-belt form of conveyor, and you must make tracking adjustments to the belt, you should O A. make a small adjustment, then continue with small adjustments as needed O B. make a large adjustment in one direction and bring the belt back in the other direction O C. perform tracking adjustments at both ends of the belt D. pull the belt back with pllers or a belt puller and see if it returns to the previous tracking marks